Hi everybody,
I decided to enter the world of film photography. Since I have no experience in this field, I wanted to start with something cheap and easy. I found an Agfa Optima 335, but I can't find a lot of info about it online. Do you have any suggestion? Should I buy it?

You would have very little control over the settings and focussing. I think that you would be much better considering a SLR which would give full control over aperture, shutter speed and focus. The range of controls may seem daunting at first but you would have complete control over the exposure and framing of your shots.

There are plenty of SLRs from the likes of Nikon, Canon, Pentax, Olympus (add any other reputable manufacturer of your choice) with a wide range of OEM and third party lenses available cheaply and in good condition.